Agilent Technologies, Inc.
Agilent Technologies, Inc. 49 SATA PHY, TSG & OOB Test MOI v.1.1 Revision 1.4
Test OOB-03 – COMINIT/RESET and COMWAKE Transmit Burst Length
Purpose: To verify that the COMINIT/RESET and COMWAKE Transmit Burst Length of the Product Under
Test’s (PUT’s) transmitter is within the conformance limits.
References:
[1] Serial ATA Revision 3.0, 7.2.1, Table 34 – OOB Specifications
[2] Ibid, 7.2.2.6.4
[3] Ibid, 7.4.2251
[4] SATA Interoperability Program Unified Test Document, 2.18.3 – COMINIT/RESET and COMWAKE
Transmit Burst Length
Resource Requirements:
Same as for OOB-02.
See appendix A for details.
Last Template Modification: March 25, 2009 (Version 1.02)
Discussion:
Reference [1] specifies the Transmitted Signal conformance limits for SATA products. This specification
includes conformance limits for the COMINIT/RESET and COMWAKE Transmit Burst Length. Reference [2]
provides the definition of this term for the purposes of SATA testing. Reference [3] defines the measurement
requirements for this test.
Test Setup:
The OOB Tests are designed to be run concurrently for simplicity. Since the initiation of a COMRESET
from a products or pattern generator will force a hard reset in a products, the following OOB tests can all be
performed using an Agilent 81134A 3.35Gbps Programmable Pulse/Pattern Generator to generate the nominal OOB
COMRESET and COMWAKE bursts, as well as to stress the min in-spec, max in-spec, min out-of-spec and max
out-of-spec timing conditions for inter-burst gaps. The Agilent oscilloscope, which is running the N5411B SATA
test software, will control both the pattern generator stimulus as well as the oscilloscope acquisition and processing
parameters, providing fully automated control and repeatability of the OOB test sequence in successive fashion. A
COMRESET is issued from the generator prior to running each test to ensure products reset, but in some cases, it
may still be necessary to remove power from the products under test temporarily to allow the products to exit from a
BIST controlled mode and return to normal operation.
Test Procedure:
This parameter is covered by Agilent Technologies, Inc. N5411B automated SATA compliance software,
revision 1.02 or later. Either “PASS” or “FAIL” is shown for the products COMINIT and COMWAKE
Transmit Burst Length test in the report generated at the completion of the testing.
Observable Results:
The products COMINIT and COMWAKE Transmit Burst Length value shall be between the minimum and
maximum values of UI
OOB
multiplied by 160. Numerically, the COMINIT and COMWAKE burst lengths
should be between 103.5 ns and 109.9 ns, which is 160 times the Min and Max UI
OOB
specification limits
of 646.67ps and 686.67ps, respectively. Note that this measurement is made as the longest burst length
between the +100mV threshold crossing and -100mV threshold crossing within each
COMRESET/COMINIT/COMWAKE burst.
Possible Problems:
If this measurement is only made at the +100mV or -100mV threshold, some bits in the OOB burst will not
be measured correctly and may result in a measurement failure.
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